Melisa Keeton and Shelley Wolfe became the first same-sex couple to exchange marriage vows under the new Iowa ruling. (Des Moines Register photo)

Today is the first day that same-sex couples can apply for marriage licenses in Iowa, and in some cities they are lining up at county courthouses to do it. Some couples, who have had the usual 3-day waiting period waived, are already getting married.

Couples line up waiting to apply for marriage licenses at the Polk County Administration Building in Des Moines, Iowa. (Des Moines Register photo)

According to the Des Moines Register, at least 360 same-sex couples had applied for marriage licenses on the first day. There also have been petitions by anti-marriage groups asking courthouse officials not to grant licenses to gay couples, but, in general, there was very little visible protest against those waiting to make their applications.